Phoenix Air Group Inc. will perform several million dollars worth of work in San Diego under a recent U.S. Navy contract modification.

Based in suburban Atlanta, Phoenix Air operates small aircraft used in military signal jamming exercises.

The deal announced June 1 could be worth as much as $14.6 million. It will extend services supporting EWAT jamming systems training in San Diego until November 2020. EWAT stands for electronic warfare aircraft for training.

Some 35 percent the work will be done in San Diego; the balance will be done in Jacksonville, Florida (50 percent) and Virginia Beach, Virginia (15 percent).

According to a Pentagon announcement, EWAT provides stand-off jamming for opposing force threat simulation during various levels of exercises for shipboard and aircrew tactics, aircraft weapon system operators and for procedures to counter potential enemy electronic attack threats.

According to the company website, Phoenix Air flight crews have extensive training in threat simulation and electronic attack flight profiles. All pilots are formation flying qualified, low-level flight qualified, and proficient in bomber/fighter tactics.

The Naval Air Warfare Center Aircraft Division in Patuxent River, Maryland awarded the contract.